Improved mode of preparing roofing material



A. ROBINSON. `PREPABAIION OF ROOPING FABRIC.

l\o.48,3l 1I n Patented JuneI 20, 18654.

" p ITED STATES To all inkom it 'may coneerm, y `Be it knownthat L'ALFRED ROBINSON, of thecity and State of `New York, have invented, made,- and applied; Vto use a certain new and useful Improvementin Preparing Roofing Fabrics; vand I (lo hereby declare the following.,lr to bea full, clear, and exactl description'oi' the `said invention, reference being had to the annexed drawings, making part of this specifica# tion, wherein-. I 1 v i Figure lr'is a-plnn otjthe machine employed by me, andV Fig. 2 isA a vertical longitudinal y sectionof the same.A y y y `Similar marks of reference denote the same parts. ,f

Roofing .material has' heretofore'been prepared: by passing sheets of paper or other ma- ,terial through' melted pitch, asphalt, and similar material. Said paper or .other fabric is, however, liable to be torn, and the-material has to he in `a very soft or fluid state, andis often uneqnallyspread upon such fabric.` Native asphalt contains from sixty to eighty per cent. of earthy matters, -and isthc most dura- 4 ble roofing substance of' this character known. Artificial. asphalt or pitch derived from the ble` to rurjrinxhot weather, to crackin/cold w'eathena'hd rapidly wears away by 'ex-posare i to` the atmosphere.' Whenuthi's artificial asphalt" iscombined with, a vlarge quantity of earthy matters `it forms fa natural `and very durable waterLproofcemeut.-",

Heretofore roolin g fabrics havefbeen coated y l rby passing them through the bituminous com..- y `position when in a melted land,rerypiiuid con` dition, and it is,impossiblegto,obtain this xiid condition when any considerable amount of earthy mattcrsfare mixed in withlfthecompositonbecause" these enrthyfmatt'ers make the y compound very'thick and stiil". "Coneequentlyi't as been wholly impracticable iugth processes ,heretoforehsed to coat `felt and, similar fabrics l i withthe best kind of compositien-,fthnt ienneA 4rooting fabrics.` f x1 y The natureof my saidinventon'consists in" ALFRED ROBINSON, or NEW Youn, N. Y.-

ARiNG Rooi-*ING MATani/M .l

speinmnon rs1-ming pari or Leners recent No. 4 n.3 l l, anne June 20,1865.. y

`a Inode of coating rooting fabrics :by a pair of rollers ina. horizontal'position, the space bej- `tween which forms a hopper for thereccption ot' asphalt or other material, which is applied bythe rollers-in a uniform layer to a `sheet or sheets of felt or` other material passed be!v n tween thel coating material and the roller. By this means the coating material is only brought into contact` withthe sheet ot felt or'other' fabrics, as the sheet itself lies against and is supportedby the roller. Hence there is no tendency to tear said sheet, and it does not have to be drawn through the coating material, `as

heretofore. .I-am ableto add byeach pairof.

rollers a sheet of felt or other material to 'two y or more sheets previously cemented together,A

so as to produce a. roofing fabric of any desired thickness. By this mode of applying the coat?l ing material I am enabled to employit in a much stiierconditien than would 'be possible if the paper were drawn through it, andl can also introduce with the asphalt or other material earthy matter that will render the root'- ing material much moregdurable, but would render the coating materieltoo stiii' foruse'in4 the manner heretofore practiced.

size, receiving the rollers b b,fc c, and d Leach pair ot' which is connected by gears e e, and they are allto bepropelled by suitable power.

f I have represented my apparatus'asadapted to the preparation of rooting material from three rolls of paper orother fabric, f,`g, and

Ah but said-apparatus 4may'have a greater or less number of f'pairs of rollers, so as to operate upon a-less or greater number of `rolls of fab- The fabric-from the rolls f and g passes -ric. under shears o1' rotary Vcritters 'i by which ,pliedjua semi-nid state between the rollers b b, as represented, and, being soft, adheres to .the sheets of papero; Qtnenfehricganfl. tasses thenr `to stick lrmly together as they pass' "through, between the rollers b b, the surplus material being squeezed out, and'kept back.

Thejourn l-boxes ofon'e of therollers bshould be adjustable, so as to allow for different thicknesses of material, `and for varying the thick ness of the intervening layer of cement'. The

In the" drawings, a is a' fraxnefot suitable I other pairs of rollers should alsobe adljustaf blefor the same purpose. The nwo layers of paper orpcther'fabric are ledbetween the rollers e c, andlat .this point the third-layerfrom the roll he'isl added, a .'rotarycutter being provided ntk for` dressing thesheet tO-atunitorm4 width, and the lasphalt or other cement being applied in n soft state betweeuthe layers, when they are pressed together -by the rollers.l

' Afsurface' otasphalt orsimila'r'material may vbe applied to the rooiingfabricprepared as .aforesaidlby passing'. theA same through the pair "of llers d d,. at which point the coating materialis applied in a soft or semi-Huid state, und is passed o'r rolled upon the surface of the said rooting material.' The roller with which -said asphalt comes in contact should be kept greased or sfo prepared that the asphalt or other materialwill uotiadhere thereto.

I- doj not' limit myself to any character of rooting paper, felt,`or cloth, but. intend to lise this apparatus upon anydesircd charaeter'ot:

.all V y ayasgall" The cutters 'i aud 7c might act at thejend-s-of the-rollers and form'with the -edges at this point rotary shears, andthe plastic asphalt or other material may be kept in its .place by stav .tionary'pieces at the endsor between ythe rollers. to form hoppers for retaining said material.

- Wllat'I claim, and desire to secure by Letters Patent, is-

` .The method of coatingl a sheet or sheets of felt o r'other material, to form a'rcodn'g fabric, .with lasphalt4 or other material 'in af soft or plastic state, 'pplied directly to such fabric in the manner specified,

In witness whereof I have hereunto set my signature this 3d day of February, 1865.v

rWitnesses:

Taos. GEO. HAROLD, GHAs.`B. SMITH.

[ALFRED ROBINSON. 

